I have two fields, StartDate and NewDate. The NewDate field, I want to calculate based on StartDate and return a date.

If the Start date is greater than or equal to 3/31/2016, then enter 4/26/2017 in NewDate field. If not, then leave the field blank.


I have read that you can't leave the field blank, so I stuck 1/1/2010 in there to get around that issue, for now.

But, this formula still doesn't work. I don't know what I'm doing wrong. The NewDate field shows up blank (and I thought it couldn't). I made sure the date results are set for a Date. I edited my start date all sorts of ways to see what happens, and it's always blank.


  • Is your StartDate column set to dateonly or datetime?
    – Hardik
    Jun 6, 2016 at 17:48
  • ahh start date IS date and time. I should change that to just date, right?
    – mbeck
    Jun 6, 2016 at 18:00
  • Yes... Please check my answer
    – Hardik
    Jun 6, 2016 at 18:01
  • wait.. I was wrong. Both StartDate and NewDate are set to date only
    – mbeck
    Jun 6, 2016 at 18:01
  • Your calculated column's return type must be datetime
    – Hardik
    Jun 6, 2016 at 18:02

2 Answers 2


Please check below options first.

  1. StartDate of type Datetime with date only option.
  2. Choose The data type returned from your formula must be DateTime.

Than Below formula.

  • StartDate is Date only. Return data type is Date and Time formatted as Date Only. I changed the return format to Date & Time and it still didn't work.
    – mbeck
    Jun 6, 2016 at 18:05
  • return type for the calculated column must be date time. Check here...nbsp.blob.core.windows.net/uploads/Photos/eusp/…
    – Hardik
    Jun 6, 2016 at 18:09
  • Yes. That's what StartDate and NewDate are both set to. The formula returns 1/1/2010 now, no matter what the StartDate is.
    – mbeck
    Jun 6, 2016 at 18:12
  • Use updated formula from answer
    – Hardik
    Jun 6, 2016 at 18:17
  • Did you get it working?
    – Hardik
    Jun 6, 2016 at 18:30

You have to compare a date to a date, not a string. Try this:


Dates can't be set blank through a workflow. It worked fine for me with a calculated field. This also worked fine for me for a "Date and Time" field... it doesn't have to be date only.

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